Question

equal to a plus b the whole square minus a minus b the whole square​

Answer 1

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Answer 2

Step-by-step explanation:

=

$({a + b})^{2} - ({a - b})^{2}$

According to the formula

${a}^{2} + 2ab + {b}^{2} - ( {a}^{2} - 2ab + {b}^{2} ) \\ {a}^{2} + 2ab + {b}^{2} - {a}^{2} + 2ab - {b}^{2} \\ 4ab$